\documentclass[tikz,border=2mm]{standalone}
\usepackage{array,amsmath,mathptmx,xcolor,bbding,pifont,colortbl,amssymb}
\usepackage[UTF8]{ctex}
\newcolumntype{C}[1]{>{\centering\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}
% 只需要这个就可以
\usepackage[thicklines]{cancel}

% 可以设置线条颜色，默认是黑色
\usepackage{xcolor}
\renewcommand{\CancelColor}{\color{red}} 
\usepackage{tikz-cd}
\usepackage{tikz,graphicx,subfig,caption} % Required for drawing custom shapes
\usetikzlibrary{fit,matrix,chains,arrows,shapes,positioning,arrows.meta,chains,shadows,shapes.callouts,decorations.text,shapes.symbols,shapes.misc, positioning,decorations.pathreplacing,calc,backgrounds}
% 图边框颜色
\arrayrulecolor{blue}
% 设置浅蓝色
\definecolor{lightblue1}{RGB}{175, 175, 237}

\definecolor{lightgreen1}{RGB}{226, 246, 186}
\definecolor{lightgreen2}{RGB}{204, 255, 204}

% 新定义的颜色
\definecolor{lightblue2}{RGB}{46, 117, 182}
\definecolor{lightblue3}{RGB}{143, 170, 220}
\definecolor{lightblue4}{RGB}{157, 195, 230}
% 设定删除线颜色
\renewcommand{\CancelColor}{\color{red}}

\begin{document}
	\begin{tikzpicture}[>=latex,every node/.style={,inner sep=0}]
		
		\draw[color=lightblue2, fill=lightblue2] (0,0) circle (0.5em) ;
		
		\begin{pgfonlayer}{background}
			\draw[color=lightblue4, fill=lightblue4] (0,0) circle (0.8em);
		\end{pgfonlayer}
		
		\begin{pgfonlayer}{background}
			\draw[color=lightblue3, fill=lightblue3] (0,0) circle (0.65em);
		\end{pgfonlayer}
		
		% \draw[color=lightblue2, fill=lightblue2] (0.4,0.2) rectangle (0.45,0.25);
		% \draw[color=lightblue3, fill=lightblue3] (0.4,0.3) rectangle (0.45,0.35);
		% \draw[color=lightblue4, fill=lightblue4] (0.4,0.4) rectangle (0.45,0.45);
		\node (rect1) at (0.4,0.2) [draw, thick,color=lightblue2, fill=lightblue2,
		minimum width=0.1em,minimum height=0.1em] {};
		\node (rect2) at (0.4,0.3) [draw, thick,color=lightblue3, fill=lightblue3,
		minimum width=0.1em,minimum height=0.1em] {};
		\node (rect3) at (0.4,0.4) [draw, thick,color=lightblue4, fill=lightblue4,
		minimum width=0.1em,minimum height=0.1em] {};
		
		\node (word1) at ([xshift=0.5em]rect1.east) {\small{LR(1)文法}};
		
	\end{tikzpicture}
\end{document}